The following is not a feature of pierre – Robin syndrome –
**Core Concept**
Pierre Robin syndrome is a congenital condition characterized by a triad of micrognathia, glossoptosis, and upper airway obstruction. It is often associated with other anomalies, such as cleft palate and congenital heart disease.
**Why the Correct Answer is Right**
The correct answer is not a feature of Pierre Robin syndrome because it does not accurately describe one of the characteristic components of the condition. Pierre Robin syndrome is defined by micrognathia (small jaw), glossoptosis (protrusion of the tongue), and upper airway obstruction. The features of Pierre Robin syndrome are closely related to the abnormal development of the mandible and tongue.
**Why Each Wrong Option is Incorrect**
**Option A:** This option might be a feature of Pierre Robin syndrome, as micrognathia is a hallmark of the condition.
**Option B:** Upper airway obstruction is a well-documented complication of Pierre Robin syndrome, making this option incorrect.
**Option D:** Cleft palate is a common association with Pierre Robin syndrome, so this option is also incorrect.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that Pierre Robin syndrome can lead to significant respiratory distress, particularly in newborns. This can be managed with various interventions, including nasopharyngeal airway placement and prone positioning.
**Correct Answer:** D. Cleft palate